This print is a variation on Other World. Instead of wood engraving and woodcut, however, Escher has employed mezzotint. The velvety qualities of this technique result from subtle gradations of tone. First, the entire surface of the plate is roughened with a serrated-edge tool. An image is then created by scraping and burnishing the plate. When printed, smooth areas remain white and rough areas print dark. In this print the artist emphasizes the infinity of space as the perspective of the building diminishes to a single vanishing point.